01 -
Box brownie mix, 1 standard package.
02 -
Vegetable oil, 1/2 cup.
03 -
Water, 3 tablespoons.
04 -
Large eggs, 4, divided and at room temperature.
05 -
Cream cheese, 16 ounces (2 8-oz packages), softened.
06 -
Granulated sugar, 2/3 cup.
07 -
All-purpose flour, 1 tablespoon.
08 -
Vanilla extract, 1 teaspoon.
09 -
Sour cream, 1/4 cup, room temperature.
10 -
Heavy whipping cream, 1 1/4 cups divided.
11 -
Powdered sugar, 3 tablespoons.
12 -
Hot fudge sauce or chocolate ganache for serving, 1/2 cup.